crm/app/middleware/AdminAuth.php

<?php

namespace app\middleware;
use think\facade\Session;

/**
 * 主要用于用户后台登陆以及权限验证
 */
class AdminAuth
{
    public function handle($request, \Closure $next)
    {
        // 判断是否是登陆
        $controller = $request->controller();
        $action = $request->action();
        if (strtolower($controller) == 'login') return $next($request);

        // 检测是否登陆
        $adminall = session('adminall');

        if (empty($adminall)) return redirect(url('login/index'));
        
        $request->admin = $adminall;

        return $next($request);
    }
}